Our watches are pre-owned or vintage, unless stated otherwise. Their capacity to tell accurate time & manage power is consistent with available technology during their time of production.
Never experiment with a watch unless you are a watchmaker - Curiosity killed the watch! When unsure about setting features, please contact us!
All Steel SEIKO Helmet Chronograph 6139-7101 Flyback with Darth Vader Case
This watch was SOLD on November 21, 2017 (Destination: Poblacion District, Davao City, Philippines).
![]() Year: 1970 - 1979 Accessories: none Crystal: glass Dial Width: 33 mm Dial Height: 33 mm |
Movement: 17 jewels automatic Case: stainless steel Case Width: 42 mm without crown Case Height: 47 mm Case Number: 8D9 555, 6139-7101 Movement Number: 6139B Band: stainless steel Band Width: 20 mm Band Length: 5 in (measures up to 6.75 in with case) |
This is an authentic Japanese-made 1970s SEIKO Helmet Chronograph Automatic Watch with Day-Date.
- Original SEIKO Watch with AFTERMARKET dial!
- FEATURES: Caliber 6139 Flyback CHRONOGRAPH, Helmet or Darth Vader Case, All Steel, Day-Date
- STAINLESS STEEL: case, back, crowns, clasp & bracelet
- Notes on the CASE (reverse): shows corrosion on flanges where case back locks in
This watch keeps good time & is in good working condition! Add this to your collection of vintage quality timepieces!
The photos presented below are of the actual item for sale. Kindly study them carefully because what you see is what you will get. We try our best to describe watches as accurately as we can that's why we present them visually & literally. In case we missed a few points, you are welcome to ask questions.
The 1970's SEIKO Helmet Chronograph, is highly collectible not only for its distinctive case & dial design, but also for the caliber 6139 movement it runs on.
This particular SEIKO Chronograph is widely known as the "SEIKO Helmet" or "SEIKO Vader" for its sizable rounded case with hooded lugs, resembling Darth Vader's helmet on Star Wars.

Its caliber 6139 movement is the first automatic movement in space & features a single register chronograph with flyback feature!
In 1973, Colonel William "Bill" R. Pogue, an astronaut on the NASA Mission Skylab 4, wore his SEIKO 6139 automatic chronograph on board - making the SEIKO 6139 the first automatic watch in space!![]() This was revealed only in 2007, when an eagle-eyed watch collector found a photo of Colonel Pogue wearing his SEIKO during the mission. In 2008, he sold it on auction for $5975, the proceeds of which went to the Astronaut Scholarship Foundation. [Click the image to expand to full-view.] SOURCE [James Lamdin @ Dream Chrono(accessed August 16, 2017) • The "Colonel Pogue" Seiko 6139 • Retrieved from http://blog.dreamchrono.com/2013/11/seiko-6139-pogue] |

EXTERNAL CONDITION: This watch is in *EXCELLENT condition (88-92%): Evidence of use is visible to the unaided eye. Scratches are light, but more numerous than "near mint".
INTERNAL CONDITION: This watch is in *EXCELLENT condition (88-92%): Working perfectly, needs no repair or service.
*condition descriptives mainly based on the Timezone Grading System

stainless steel HELMET or DARTH VADER Case
stainless steel bezel
enamel white
dial

black-stripe steel bar hour markers
black-stripe steel hour/minute hands; black-coated second hand
black day-date
display window at 3 o'clock

steel SEIKO name logo, painted black "CHRONOGRAPH" & "AUTOMATIC" at 12 o'clock
painted black "JAPAN" & serial numbers at 6 o'clock
painted
white white tachymeter grid on black trim
painted black sub-grid

original SEIKO stainless steel crown & push-buttons
original SEIKO glass
crystal

original SEIKO stainless steel chunky bracelet

Band Length: 5 in (measures up to 6.75 in with case)
aftermarket SEIKO stainless steel Fold-Over clasp

stainless steel case
back embossed with SEIKO name logo, "JAPAN", "WATER RESISTANT", "STAINLESS STEEL" & serial numbers
We cannot guarantee the effectiveness of its waterproof closure because this watch is vintage

Notes on the CASE (reverse): shows corrosion on flanges where case back locks in

Japanese-made SEIKO 17 jewels automatic movement - tested by our experienced technician